<template> 
  <div>
    <el-upload action="http://127.0.0.1:8200/api/easymallthirdparty/upload" :data="dataObj" list-type="picture"
      :multiple="false" :show-file-list="showFileList" :file-list="fileList" :before-upload="beforeUpload" :on-remove="handleRemove"
      :on-success="handleUploadSuccess" :on-preview="handlePreview">
      <el-button size="small" type="primary">点击上传</el-button>
      <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过10MB</div>
    </el-upload>
    <el-dialog :visible.sync="dialogVisible">
      <img width="100%" :src="fileList[0].url" alt="">
    </el-dialog>
  </div>
</template>
<script>
  // import {
  //   policy
  // } from './policy'
  import {
    getUUID
  } from '@/utils'

  export default {
    name: 'singleUpload',
    props: {
      value: String,
      bucketName: String
    },
    computed: {
      imageUrl() {
        return this.value;
      },
      imageName() {
        if (this.value != null && this.value !== '') {
          return this.value.substr(this.value.lastIndexOf("/") + 1);
        } else {
          return null;
        }
      },
      fileList() {
        return [{
          name: this.imageName,
          url: this.imageUrl
        }]
      },
      showFileList: {
        get: function() {
          return this.value !== null && this.value !== '' && this.value !== undefined;
        },
        set: function(newValue) {}
      }
    },
    data() {
      return {
        dataObj: {
          bucketName: ""
        },
        dialogVisible: false
      };
    },
    methods: {
      emitInput(val) {
        this.$emit('input', val)
      },
      handleRemove(file, fileList) {
        this.emitInput('');
      },
      handlePreview(file) {
        this.dialogVisible = true;
      },
      beforeUpload(file) {
        this.dataObj.bucketName = this.bucketName ? this.bucketName : 'default';

        // let _self = this;
        // return new Promise((resolve, reject) => {
        //   policy().then(response => {
        //     console.log("响应的数据", response);
        //     _self.dataObj.policy = response.data.policy;
        //     _self.dataObj.signature = response.data.signature;
        //     _self.dataObj.ossaccessKeyId = response.data.accessid;
        //     _self.dataObj.key = response.data.dir + getUUID() + '_${filename}';
        //     _self.dataObj.dir = response.data.dir;
        //     _self.dataObj.host = response.data.host;
        //     console.log("响应的数据222。。。", _self.dataObj);
        //     resolve(true)
        //   }).catch(err => {
        //     reject(false)
        //   })
        // })
      },
      handleUploadSuccess(res, file) {
        console.log("上传成功...")
        console.log(res,file)
        this.showFileList = true;
        this.fileList.pop();
        var url=res.url;
        this.fileList.push({
          name: file.name,
          url: url
        });
        this.emitInput(this.fileList[0].url);
      }
    }
  }
</script>
<style>

</style>
